hey man im only one year older than you i actually had a kind of similar experience except when i found out she wanted to transition i kind of lost all attraction for herhim if you still want to persue herhim then thats completely okay it would mean your not straight but not necessarily gay before asking them out you need to find out if shehe likes guys so become friends first maybe message herhim and say congrats on coming out and that youre happy for herhim